Support for light-diffusers.



r J. BERG. slurrom ron LIGHT mrussns. APPLICATION FILED DEC-22.191]- 13819485; I r Patented Ot. 15,1918.

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. described in UNITED STATES JOSEPH BERG OF CHICAGO, ILLINOIS, ASSIGNOR TO STEWARZBWARNER PATENT OFFICE.

SPEEDOMETER CORPORATION, OF CHICAGO. ILLINOIS; A CORPORATION OF VIRGINIA.

surrom' Foa Lmnr-mrrusnns.

To all whom 'it may concern;

Be it known that I, Josarn Bane, a citizen of the United States, residing at Chicago. in the county of Cook and the State of Illinois, have invented certain new and useful Improvements in Supports for Light- Difl'users, of which the following is a specification, reference being had to the accompanying drawings. forming a part thereof.

The purpose of this invention is to provide a simple and economical supportfor a light difl'using glohe of the type more fully detail in mypending applica tion, Serial #192,639. It consists in the features and elementsot construction and their combination hereinafter described and shown in the drawings as indicatedby the claim.

In the drawings:

l ignre 1 is a vertical axial section showing a supportingdeviee embodying this invention associated with an incandescent lamp bulb and a diffusing globe in position.

globe, A,

of use. Fig. 21's 9. front elevation of such a sup port including .a fragment ofthe difl'using globe.

Fig. 3 is a'transv'erse section of the suporting device as it appears before the globe 15 attached.

Fig. 4 is a detail view showing a fragment of the supportin device to illustrate more clearly the non-a rasive pad of the sort carried on .each ofits radial arms.

It maybe understoodthat the diffusing isintended for use in vehicle headghts for screening3 thereflector indicated in dotted lines at from the lamp filament, C, permitting only diflused light to reach the reflector from said lamp, so that the reflector will emit a brilliant glow of light riitherthan ,a concentrated beam. The globe, A, ispreferweight and must be supportcdeither upon the stem, 1), of the lamp bulb, E,or upon the. rejecting end of the ,soeket tube, F,

whic carrles said bulb,, E, and to prevent injury to such part, it isimportant to 'prevent vibration of'the lobe, A.

The fitting which 1's the subject ofthis Specification of Letters Patent. application Med December 22, 1917. Serial No. 208,428.

locking of the lamp in the socket tu which includes from any direct rays V tin, so that for securing the base coil of the considerable I tured member having Patented Oct. 15, 1918;

invention is therefore made rearwardly convex in form following approximately the curvature of the reflector, B, and includes a number of radially extendin arms, 1, each carrying a nonabrasive pad,

, facing rear wardly for contact with the surface of thereflector B. At the apertured at 3 to accommodate the lam stem, D, or if necessary the socket tube, I and around this aperture,.3, is secured the base coil of'a' sonically. helical or spiral spring, 4, whose smallest is large enough to admit the lamp stem, D, as indicated in Fig. 1. Thus it will be see center the fitting is' and forward coil that upon insertion of the lamp stem, D

through the sin'all coil of the spring, 4,:an

engagement of its locking pin, G, in bayonet slots (not shown) in the tube, F, in a well understood manner, tudinally compressed and serves to transmit a yielding pressure to the fittin disposed with the pads, 2, againstthe re ector surface, B. The pads, 2, are 'sufiicien't in numthe spring, 4, is longiher and area so that their frictional engagement with said surface of the reflector, B, under the pressure of th spring, 4, is suflicient to effectually check ny serious vibration involving slippage of the pads, 2, upon the reflector, B, and the pressure of the spring, 4, is sullicient to prevent the padded arms,

jarred out of'contact with the 1, from being F reflector, B, y any ordinary road shock incident to travel of the vehicle.-

In the form shown, the fitting may bemade as a die casting, having a composition a considerable portion of spring, 4, the thin flange, 5, may be merely bent over the wire of the coil, and similarly fox-"securing the globe, rim or'flange, 6, may be spun down against the glass rim of its centralopening as shown in Fig.1, thus providing a very simple and economical assembly of the parts.

A, in position, the

A fitting-for. the purpose indicated com- I rcarwardly convex centrally apera plurality of radial arms. each carrying a non-abrasive pad on its'rearsurfac'e, and a forwardly projecting prising a toward the latter for retainin the base coil of a spring substantially as ascribed.

In 'testluwny whereof I hzive hereunto set 10 my hand at Chicago, Illinois, "this 30th day of November, I917.

J OSEP H BERG. 

